Electronic key



FIG. 1 is a front perspective view of an electronic key according to our new design;

FIG. 2 is a front side view thereof;

FIG. 3 is a rear side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof;

FIG. 8 is a sectional view taken along line 8′-8′ of FIG. 6; and,

FIG. 9 is a sectional view taken along line 9′-9′ of FIG. 6.

The broken lines depict portions of the article that form no part of the claimed design. 

CLAIM The ornamental design for an electronic key, as shown and described. 